One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,6)(4,5)(7,8)(9,10,12,13)(11,14,16,15)(17,18,23,29)(19,24,33,41)(20,26,35,43)(21,28,22,27)(25,36,42,34)(30,38,45,48)(31,40,32,39)(37,46,47,44)(2,5)(3,7)(9,10)(11,15)(12,13)(14,16)(17,19,23,33)(18,24,29,41)(20,30,35,45)(21,31,22,32)(25,37,42,47)(26,38,43,48)(27,39,28,40)(34,44,36,46)(10,13)(11,16)(17,20,23,35)(18,25,29,42)(19,30,33,45)(21,34,22,36)(24,37,41,47)(26,28,43,27)(31,44,32,46)(38,40,48,39)(1,3,4,7)(2,6,5,8)(9,11,12,16)(10,14,13,15)(17,20)(18,26)(19,30)(21,36)(22,34)(23,35)(24,38)(25,27)(28,42)(29,43)(31,46)(32,44)(33,45)(37,39)(40,47)(41,48)(10,13)(14,15)(17,21,23,22)(18,27,29,28)(19,31,33,32)(20,34,35,36)(24,39,41,40)(25,26,42,43)(30,44,45,46)(37,38,47,48)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.